Class RoundChart

java.lang.Object

com.codename1.charts.views.AbstractChart

com.codename1.charts.views.RoundChart

Direct Known Subclasses:

DialChart, DoughnutChart, PieChart, RadarChart

public abstract class RoundChart
extends AbstractChart

Base class for charts that render circular data representations such as pie charts, doughnut charts or gauges.

Subclasses operate on CategorySeries data and share common functionality for drawing the chart title, legend entries and handling layout. Developers typically work with concrete subclasses such as PieChart or DoughnutChart directly.

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	autoCalculateCenter
protected int	mCenterX	The chart center X axis.
protected int	mCenterY	The chart center y axis.
protected CategorySeries	mDataset	The series dataset.
protected DefaultRenderer	mRenderer	The series renderer.
protected static final int	NO_VALUE	A no value constant.
protected static final int	SHAPE_WIDTH	The legend shape width.

Constructor Summary

Constructors

Constructor	Description
RoundChart(CategorySeries dataset, DefaultRenderer renderer)	Round chart.

Method Summary

Modifier and Type	Method	Description
void	drawLegendShape(Canvas canvas, SimpleSeriesRenderer renderer, float x, float y, int seriesIndex, Paint paint)	The graphical representation of the legend shape.
void	drawTitle(Canvas canvas, int x, int y, int width, Paint paint)	The graphical representation of the round chart title.
int	getCenterX()	Returns the center on X axis.
int	getCenterY()	Returns the center on Y axis.
int	getLegendShapeWidth(int seriesIndex)	Returns the legend shape width.
DefaultRenderer	getRenderer()	Returns the renderer.
boolean	isAutocalculateCenter()
void	setAutocalculateCenter(boolean a)
void	setCenterX(int centerX)	Sets a new center on X axis.
void	setCenterY(int centerY)	Sets a new center on Y axis.

Methods inherited from class AbstractChart

calculateDrawPoints, draw, drawBackground, drawLabel, drawLegend, drawPath, drawPath, drawString, getExceed, getLabel, getLegendSize, getSeriesAndPointForScreenCoordinate, isNullValue, isVertical

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

SHAPE_WIDTH

protected static final int SHAPE_WIDTH

The legend shape width.

See Also:

• Constant Field Values

NO_VALUE

protected static final int NO_VALUE

A no value constant.

See Also:

• Constant Field Values

mDataset

protected CategorySeries mDataset

The series dataset.

mRenderer

protected DefaultRenderer mRenderer

The series renderer.

mCenterX

protected int mCenterX

The chart center X axis.

mCenterY

protected int mCenterY

The chart center y axis.

autoCalculateCenter

protected boolean autoCalculateCenter

Constructor Details

RoundChart

public RoundChart(CategorySeries dataset,
 DefaultRenderer renderer)

Round chart.

Parameters

• dataset: the series dataset

• renderer: the series renderer

Method Details

drawTitle

public void drawTitle(Canvas canvas,
 int x,
 int y,
 int width,
 Paint paint)

The graphical representation of the round chart title.

Parameters

• canvas: the canvas to paint to

• x: the top left x value of the view to draw to

• y: the top left y value of the view to draw to

• width: the width of the view to draw to

• paint: the paint

getLegendShapeWidth

public int getLegendShapeWidth(int seriesIndex)

Returns the legend shape width.

Parameters

• seriesIndex: the series index

Returns

the legend shape width

Specified by:

getLegendShapeWidth in class AbstractChart

drawLegendShape

public void drawLegendShape(Canvas canvas,
 SimpleSeriesRenderer renderer,
 float x,
 float y,
 int seriesIndex,
 Paint paint)

The graphical representation of the legend shape.

Parameters

• canvas: the canvas to paint to

• renderer: the series renderer

• x: the x value of the point the shape should be drawn at

• y: the y value of the point the shape should be drawn at

• seriesIndex: the series index

• paint: the paint to be used for drawing

Specified by:

drawLegendShape in class AbstractChart

getRenderer

public DefaultRenderer getRenderer()

Returns the renderer.

Returns

the renderer

getCenterX

public int getCenterX()

Returns the center on X axis.

Returns

the center on X axis

setCenterX

public void setCenterX(int centerX)

Sets a new center on X axis.

Parameters

• centerX: center on X axis

getCenterY

public int getCenterY()

Returns the center on Y axis.

Returns

the center on Y axis

setCenterY

public void setCenterY(int centerY)

Sets a new center on Y axis.

Parameters

• centerY: center on Y axis

isAutocalculateCenter

public boolean isAutocalculateCenter()

setAutocalculateCenter

public void setAutocalculateCenter(boolean a)